Ξcc++

Ξcc++
Classification Fermion
Hadron
Baryon
Mass 3621.4 (0.8)
Mean lifetime between 5.0×10−14 and 1.0×10−12

The Xi double-charm baryon, denoted as , is a Xi baryon composed of two charm quarks and one up quark.[1]

Its discovery by the LHCb Collaboration was announced on 6 July 2017 in Venice, Italy, at the European Physical Society Conference on High Energy Physics. is the first baryon discovered with two heavy quarks (charm and/or bottom) and a light quark. Its mass is 3621 MeV, nearly four times that of the proton.[2]

It was identified when it disintegrated into a baryon and three lighter mesons, K–, π+ and π+.

See also

References

  1. ↑ Sébastien Gavois (Nextinpact.com) (2017-07-10), Retour en douceur sur la découverte d'une nouvelle particule, avec deux quarks " charmés ", retrieved 2017-07-10
  2. ↑ (CERN, European Organization for Nuclear Research 2017)

Bibliography

  • European Organization for Nuclear Research (CERN). "The LHCb experiment is charmed to announce observation of a new particle with two heavy quarks". Retrieved 2017-07-08.
  • LHCb Collaboration. "Observation of the doubly charmed baryon " (pdf). Retrieved 2017-07-08.
  • "Une nouvelle particule pointe son nez au Cern" (in French). Retrieved 2017-07-08.
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